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Line Spectra

"The number o...

Question

"The number of spectral lines obtained when an electron jumps from the fifth orbit to ground state is" :

A

3

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B

4

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C

5

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D

10

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Solution

The correct option is D 10
Number of spectral lines $= \sum Δ n = \sum 5 - 1 = \sum 4 + 3 + 2 + 1 = 10$

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